From the BBC World Service: Japan and Australia are among the latest countries suspending some postal deliveries to the United States. And it's all down to confusion over tariffs. President Donald Trump signed an executive order last month ending the global import tax exemption on small packages worth under $800 entering the U.S. duty-free, a change due to take effect on Friday. Also, Boeing and Korean Air have announced a deal worth $36 billion for over 100 planes.